guarantee(v = verb.communication) assure, ensure, insure, secure - make certain of; "This nest egg will ensure a nice retirement for us"; "Preparation will guarantee success!"

Derived form noun guarantee₂

Sample sentence:
Something ----s something

guarantee(v = verb.communication) undertake - promise to do or accomplish; "guarantee to free the prisoners"

is one way to assure, promise

Derived form noun guarantee₂

Sample sentences:
They guarantee the money to them
They guarantee them the money

guarantee(v = verb.communication) warrant - stand behind and guarantee the quality, accuracy, or condition of; "The dealer warrants all the cars he sells"; "I warrant this information"

is one way to back, endorse, indorse, plump for, plunk for, support

Derived forms noun guarantee₁, noun guarantee₂, noun guarantor₁

Sample sentence:
Somebody ----s something

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CIDE DICTIONARY

guarantee, n. [For guaranty, prob. influenced by words like assignee, lessee, etc. See Guaranty, and cf. Warrantee.].

In law and common usage: A promise to answer for the payment of some debt, or the performance of some duty, in case of the failure of another person, who is, in the first instance, liable to such payment or performance; an engagement which secures or insures another against a contingency; a warranty; a security. Same as Guaranty. [1913 Webster]
"His interest seemed to be a guarantee for his zeal." [1913 Webster]
One who binds himself to see an undertaking of another performed; a guarantor. South. [1913 Webster]
" Guarantor is the correct form in this sense." [1913 Webster]
The person to whom a guaranty is made; -- the correlative of guarantor.

Syn. -- Guarantee, Warranty.

guarantee, v. t. [From Guarantee, n.].

In law and common usage: to undertake or engage for the payment of (a debt) or the performance of (a duty) by another person; to undertake to secure (a possession, right, claim, etc.) to another against a specified contingency, or in all events; to give a guarantee concerning; to engage, assure, or secure as a thing that may be depended on; to warrant; as, to guarantee the execution of a treaty. [1913 Webster]

"The United States shall guarantee to every State in this Union a republican form of government." [1913 Webster]

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OXFORD DICTIONARY

guarantee, n. & v.
--n.
1 a a formal promise or assurance, esp. that an obligation will be fulfilled or that something is of a specified quality and durability. b a document giving such an undertaking.
2 = GUARANTY.
3 a person making a guaranty or giving a security.
--v.tr. (guarantees, guaranteed)
1 a give or serve as a guarantee for; answer for the due fulfilment of (a contract etc.) or the genuineness of (an article). b assure the permanence etc. of. c provide with a guarantee.
2 (foll. by that + clause, or to + infin.) give a promise or assurance.
3 a (foll. by to) secure the possession of (a thing) for a person. b make (a person) secure against a risk or in possession of a thing.

Idiom

guarantee fund a sum pledged as a contingent indemnity for loss.

Etymology

earlier garante, perh. f. Sp. garante = F garant WARRANT: later infl. by F garantie guaranty

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THESAURUS

guarantee

Bible oath, and candle, arm, armor, assert under oath, assurance, assure, attest, avouch, avouchment, avow, back, bail, bailsman, be sponsor for, bless, bond, bondsman, book, certify, champion, cloak, compass about, confirm, copyright, countersecure, countersign, cover, cushion, defend, depone, depose, earnest, endorse, ensure, extrajudicial oath, faith, fence, fend, godfather, godparent, guarantor, guaranty, guard, harbor, haven, indemnity, insurance, insure, insurer, ironclad oath, judicial oath, keep, keep from harm, kiss the book, loyalty oath, mainpernor, make a promise, make certain, make safe, make sure, mortgagor, nestle, oath, oath of allegiance, oath of office, obligation, official oath, parole, patent, pledge, plight, police, promise, protect, register, ride shotgun for, safeguard, screen, secure, security, shelter, shield, shroud, sign, sign for, solemn declaration, solemn oath, sponsor, stand behind, stand up for, stocks and bonds, subscribe to, surety, swear, swear by bell, swear the truth, swear to, swear to God, swear to goodness, test oath, testify, tie, token, troth, undersign, undertake, undertaking, underwrite, underwriter, vouch, vouch for, vow, warrant, warrantor, warranty, word, word of honor

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ROGET THESAURUS

guarantee

Promise

N promise, undertaking, word, troth, plight, pledge, parole, word of honor, vow, oath, profession, assurance, warranty, guarantee, insurance, obligation, contract, stipulation, engagement, preengagement, affiance, betroth, betrothal, betrothment, promising, promissory, votive, under hand and seal, upon oath, promised, affianced, pledged, bound, committed, compromised, in for it, as one's head shall answer for, in for a penny in for a pound, ex voto, gage d'amour.

VB promise, give a promise, undertake, engage, make an engagement, form an engagement, enter into an engagement, enter on an engagement, bind oneself, tie oneself, pledge oneself, commit oneself, take upon oneself, vow, swear, give one's word, pass one's word, pledge one's word, plight one's word, give one's honor, pass one's honor, pledge one's honor, plight one's honor, give credit, pass credit, pledge credit, plight credit, give troth, pass troth, pledge troth, plight troth, betroth, plight faith, assure, warrant, guarantee, covenant, attest, hold out an expectation, contract an obligation, become bound to, become sponsor for, answer for, be answerable for, secure, give security, underwrite, adjure, administer an oath, put to one's oath, swear a witness.

Security

N security, guaranty, guarantee, gage, warranty, bond, tie, pledge, plight, mortgage, collateral, debenture, hypothecation, bill of sale, lien, pawn, pignoration, real security, vadium, stake, deposit, earnest, handsel, caution, promissory note, bill, bill of exchange, I, O, U, personal security, covenant, specialty, parole, acceptance, indorsement, signature, execution, stamp, seal, sponsor, cosponsor, sponsion, sponsorship, surety, bail, mainpernor, hostage, godchild, godfather, godmother, recognizance, deed of indemnity, covenant of indemnity, authentication, verification, warrant, certificate, voucher, docket, doquet, record, probate, attested copy, receipt, acquittance, quittance, discharge, release, muniment, title deed, instrument, deed, deed poll, assurance, indenture, charter, charter poll, paper, parchment, settlement, will, testament, last will and testament, codicil, bonis avibus, gone where the woodbine twineth.

VB give security, give bail, give substantial bail, go bail, pawn, impawn, spout, mortgage, hypothecate, impignorate, guarantee, warrant, warrantee, assure, accept, indorse, underwrite, insure, cosign, countersign, sponsor, cosponsor, execute, stamp, sign, seal, let, sett, grant a lease, take a lease, hold a lease, hold in pledge, lend on security.

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